Home / 20,344.17-28,074.93-11,391.68

Finding the Fourth Proportional to 20,344.17, 28,074.93 and 11,391.68

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Solution

The fourth proportional to 20,344.17, 28,074.93 and 11,391.68 is: 15,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.17 : 28,074.93 = 11,391.68 : x
  2. Step 2: Convert to fraction form
    20,344.17/28,074.93 = 11,391.68/x
  3. Step 3: Cross multiply
    20,344.17x = 28,074.93 × 11,391.68
  4. Step 4: Simplify right side
    20,344.17x = 319,820,618.58
  5. Step 5: Solve for x
    x = 319,820,618.58/20,344.17
  6. Step 6: Final answer
    x = 15,720.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.